{
  "answerability": "evidence_backed_claims_available",
  "claims": [
    {
      "claim": {
        "claim_id": "claim-route-segment-convict-lake-loop-east-shore-trail",
        "evidence_ids": [
          "evidence-route-segment-convict-lake-loop-east-shore-trail",
          "evidence-route-segment-convict-lake-loop-east-shore-trail-transportation-geometry"
        ],
        "predicate": "official_dataset_route_segment",
        "spatial_scope_ids": [
          "scope-route-convict-lake-loop"
        ],
        "subject_id": "route-segment-convict-lake-loop-east-shore-trail",
        "temporal_scope": null,
        "value": {
          "distance_miles": 0.3459521,
          "distance_status": "source_published_dataset_length",
          "end_coordinate": {
            "latitude": 37.59462220472,
            "longitude": -118.85175619577528
          },
          "geometry_snapshot": {
            "feature_id": "route-segment-convict-lake-loop-east-shore-trail",
            "path": "geometry/v0/snapshots/usgs-convict-lake-loop-closure-20260925.geojson",
            "sha256": "f1dadc4b81c810fa88cd0b5104248a4cf3288f5ef34b0a1245b0310bce25ad5e"
          },
          "route_role": "east_shore_lakeshore_trail",
          "source_feature_id": "{03B23C3E-B3C4-4466-88C4-D794CF42ACA4}",
          "source_feature_name": "CONVICT LAKE VIS",
          "start_coordinate": {
            "latitude": 37.59027930167576,
            "longitude": -118.85298200177768
          },
          "surface": "paved_trail"
        }
      },
      "evidence": [
        {
          "claim_id": "claim-route-segment-convict-lake-loop-east-shore-trail",
          "evidence_id": "evidence-route-segment-convict-lake-loop-east-shore-trail",
          "notes": "",
          "observation_id": "observation-usfs-convict-lake-loop-map-20260925",
          "stance": "supports"
        },
        {
          "claim_id": "claim-route-segment-convict-lake-loop-east-shore-trail",
          "evidence_id": "evidence-route-segment-convict-lake-loop-east-shore-trail-transportation-geometry",
          "notes": "",
          "observation_id": "observation-usgs-convict-loop-closure-geometry-20260925",
          "stance": "supports"
        }
      ],
      "observations": [
        {
          "artifact_refs": [],
          "content": "The official Forest Service Convict Lake hiking map depicts a continuous dotted hiking route around the lake. The retained south-shore trail reaches the road and cul-de-sac on the lake's east side; the mapped loop follows a road connection, returns to an east-side lakeshore trail, and then uses another road connection through the boat-ramp and trailhead-parking area to rejoin the retained north-shore trail. The map does not publish individual leg mileages or reusable line geometry for these three mixed-surface connections.",
          "observation_id": "observation-usfs-convict-lake-loop-map-20260925",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-25T10:00:00+00:00",
          "source_id": "source-usfs-convict-wilderness-hiking"
        },
        {
          "artifact_refs": [
            "geometry/v0/snapshots/usgs-convict-lake-loop-closure-20260925.geojson"
          ],
          "content": "The July 2026 USGS Transportation service returns the Convict Lake Road and Boat Launch road features plus a paved 0.34564349-mile CONVICT LAKE VIS trail. Their geometry matches the road-trail-road loop closure depicted by the official Forest Service hiking map. The south road feature intersects the paved trail endpoint within 0.4 meter; the north road and retained trail endpoints match within approximately 1.4 meters.",
          "observation_id": "observation-usgs-convict-loop-closure-geometry-20260925",
          "observed_at": null,
          "observer": "",
          "retrieved_at": "2026-09-25T11:00:00+00:00",
          "source_id": "source-usgs-national-map-transportation-convict-20260925"
        }
      ],
      "sources": [
        {
          "locator": "https://www.fs.usda.gov/media/123390",
          "publisher": "USDA Forest Service",
          "source_id": "source-usfs-convict-wilderness-hiking"
        },
        {
          "locator": "https://carto.nationalmap.gov/arcgis/rest/services/transportation/MapServer",
          "publisher": "U.S. Geological Survey / U.S. Forest Service",
          "source_id": "source-usgs-national-map-transportation-convict-20260925"
        }
      ],
      "subject": {
        "entity_id": "route-segment-convict-lake-loop-east-shore-trail",
        "kind": "route_segment",
        "name": "Convict Lake Loop east-side lakeshore trail"
      }
    }
  ],
  "entity": {
    "entity_id": "route-segment-convict-lake-loop-east-shore-trail",
    "kind": "route_segment",
    "name": "Convict Lake Loop east-side lakeshore trail"
  },
  "gap_details": [],
  "history": [
    {
      "action": "ADD",
      "change_set_id": "wp-20260925-convict-loop-mixed-surface-correction",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/entities/route-segment-convict-lake-loop-east-shore-trail.json",
      "reason": "Replace the coarse Convict Lake east-shore connector with the mapped road-trail-road sequence.",
      "record_id": "route-segment-convict-lake-loop-east-shore-trail",
      "record_type": "entity",
      "summary": "Replace Convict Lake Loop's coarse east connector with an evidence-bounded road-trail-road sequence."
    },
    {
      "action": "REPLACE",
      "change_set_id": "wp-20260925-convict-loop-complete-geometry",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-route-segment-convict-lake-loop-east-shore-trail.json",
      "reason": "Add reviewed USGS road and trail geometry for the complete Convict Lake loop.",
      "record_id": "claim-route-segment-convict-lake-loop-east-shore-trail",
      "record_type": "claim",
      "summary": "Complete Convict Lake Loop display geometry and preserve its published-distance discrepancy."
    },
    {
      "action": "ADD",
      "change_set_id": "wp-20260925-convict-loop-mixed-surface-correction",
      "evidence_refs": [],
      "knowledge_gap_refs": [],
      "path": "canonical/v0/claims/claim-route-segment-convict-lake-loop-east-shore-trail.json",
      "reason": "Replace the coarse Convict Lake east-shore connector with the mapped road-trail-road sequence.",
      "record_id": "claim-route-segment-convict-lake-loop-east-shore-trail",
      "record_type": "claim",
      "summary": "Replace Convict Lake Loop's coarse east connector with an evidence-bounded road-trail-road sequence."
    }
  ],
  "journey": [],
  "knowledge_gaps": [],
  "reference_evidence": [],
  "relationships": [
    {
      "evidence_ids": [
        "evidence-route-segment-convict-lake-loop-east-shore-trail"
      ],
      "object_id": "route-node-convict-lake-loop-east-north-trail-road-junction",
      "predicate": "ends_at",
      "relationship_id": "relationship-route-segment-convict-lake-loop-east-shore-trail-ends-at",
      "subject_id": "route-segment-convict-lake-loop-east-shore-trail",
      "temporal_scope": null
    },
    {
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      ],
      "object_id": "route-convict-lake-loop",
      "predicate": "part_of",
      "relationship_id": "relationship-route-segment-convict-lake-loop-east-shore-trail-part-of-route-convict-lake-loop",
      "subject_id": "route-segment-convict-lake-loop-east-shore-trail",
      "temporal_scope": null
    },
    {
      "evidence_ids": [
        "evidence-route-segment-convict-lake-loop-east-shore-trail"
      ],
      "object_id": "route-node-convict-lake-loop-east-south-road-trail-junction",
      "predicate": "starts_at",
      "relationship_id": "relationship-route-segment-convict-lake-loop-east-shore-trail-starts-at",
      "subject_id": "route-segment-convict-lake-loop-east-shore-trail",
      "temporal_scope": null
    }
  ],
  "route_geometry": null,
  "route_geometry_url": null,
  "type": "canonical_entity"
}